- <section id="pcm-interface-runtime-intr">
- <title>Interrupt Callbacks</title>
- <para>
- The field <structfield>transfer_ack_begin</structfield> and
- <structfield>transfer_ack_end</structfield> are called at
- the beginning and at the end of
- <function>snd_pcm_period_elapsed()</function>, respectively.
- </para>
- </section>
-